Chimney-mold.



No. s29,5-j71- .1"-r P PATENTED AUG.28, 1906. J. B. COLE.

CHIMNEY MOLD. APPLICATION FILED um. 29.1905.

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AlgomeyS UNITED STATES JAMES B. COLE, OF "A IAECELINE, MISSOURI.

CHIMNEY-MOLD.

Specification of Letters Patent.

Patented Aug; 28, 1906.

Application filed August 29, 1905. Serial No.276,305.

T0 at whom it may concern.-

Be it known that 1, JAMES B. COLE, a citizen of the United States, residing at Marceline, in the county of Linn and State of Missouri, have invented certain new and useful Improvements in Chimney-Molds, of which the following is a specification.

This invention relates to certain improvements in molds adapted to be used in the erection of concrete and metal smoke-stacks, Water-towers, and like structures; and it consists in certain novel combinations of elements and in certain peculiaritiesin the construction and arrangement of its parts, substantially as hereinafter described, and particularly pointed out in the subjoined claims.

One object of the invention is toprovide a mold which will enable smoke-stacks and like structures to be most economically produced with a series of disconnected openings vertically within or through it, which will rovide for a circulation of air within the ody of the structure without unduly weakenin said structure.

Other objects of the invention are to provide mold-sections of inexpensive construction and yet of the highest durability and which, while capable of being readily varied as to their diameters to produce structures of different diameters and readily adjusted into and out of operative shape, will at the same time ossess in a maximum degree when adjuste into shape for use the rigidity essential to the best results.

These objects of the invention are well ac.- complished by the construction illustrated in the accompanying drawings, wherein like letters of reference designate like parts, and in which drawingsa Figure 1 is an elevation of a smoke-st ack or chimney such as may be produced by the present invention. Fig. 2 is a plan view of a portion of the mold in use. Fig. 3 is a longitudinal section through one of the mold sections or parts. Fig. 4 is an elevation of the mold section or part which surrounds the structure in the production of the latter. Fig. 5 is a longitudinal section through one of the mold-sections for producing the air-spaces in the structure. Fig. 6 is a detail view showing an air-space mold havin a handle.

The mold is composed of a plurality of parts or sections, as follows: an outside one, A; an inside one, B, and a series of intermediate ones, C. The description of details of the construction of the sections A and B will be confined to the outside section A, for the reason that the detail construction of the two sections is or may be identical, the only essential difference being that they are oi dif ferent diameters and the strengthening and holding means on the outside section A is on the outer side thereof, while the similar means on the inner section B is within its interior The body of the outside moldsection A is made of body-sections a, referably formed of sheet-iron and of suita le height and diameter, and said mold-section A may be made up of any number or width of such body-sections, according to the diameter of the stack to be produced thereby. One or more of the body-sections a are detachable in order to facilitate variation of the diameter of the rnold-section A. At suitable places, preferably at the top, bottom, and center thereof, said mold-section is encircled by strengthening-ribs A, each composed of a series of plates or sections a, which are hingedly connected together, as shown at M, and are secured to said mold-section A by means of bolts c extending into the body of the latter through openin s a in the rib-sections a At intervals around each rib there are placed projections 11 preferably in the form of an- 8 5 gleirons, adapted to receive tie-rods or holding-rods a), which encircle the mold-section and serve to enable it to maintain its shape and resist the outward pressure to which it is A subjected in use. The angle-irons or projections (1 are arranged on the respective ribs at places contiguous to the ends of the bodysections a, and there may be one of such arr-- gle-irons at each edge of said body-section. The tie-rods or holding-rods a? extend through the outwardly-projecting members of the an-' gle-irons and are secured thereto, referably by nuts a, threaded over their en s. Their relative arrangement is such that when the parts are assembledthey will extend around the mold-section A and preferably cross the v junctions of the body-sections a. The bod'ysections a are hinge dly connected with each other by the strengthening-ribs A", and thei pins or ivots a of the hinges at the junctions of the Ody-sections are preferably removable to permit disconnection of said may sections fromeach other. The junctions of the body-sections a are covered by'astri whilrzih furtheisgutfensthe strguctiireo mo -section revent' ul at. joints between this body-seb h ons a e the per end and at p strength, and similarly said elements may be readily disconnected from each other to whatever extent is necessary (whether it be the freeing only of. two contiguous hodysec tions from each other or the disassemblnig of the entire mold-section, according to particular detail arrangement of parts) to remove said mold-section from the portion of the stack which has been formed and has hardened therein.

, As hitherto stated, the inner mold B is or may be of construction similar to that of the outer mold-section A, already described, eX- cept that its holding and strengthening members are onthe inside thereof instead of upon the outside.

The sections C, which tically in or through the of peculiar construction. Each is hollow and is preferably formed with a closed bottom 0', rounded, as shown, to facilitate its replaceal, if desired. It is formed in two longitudinal parts or sections C, the abuttin edges of which are correspondingly incline from the top to the bottom of the section C, as shown :at 0, whereby when said sections are moved Wall of the stack, are

longitudinally relatively to each other, one down, or the other up from their assembled po-' sition, the diameter of the body of the moldsection C will be reduced, thus facilitating its removal from the air-space which it has formed. Its joint 0 is covered on the inside by a strip 0 It is provided at its top and contiguous to the abutting edges of its sections Q with lugs 0 which project over the top edges of said sections at their junctions with each otherand form stops which determine the proper positions of said sections. Said section 0 also has contiguous to its upace two series 0 lugs 0 each of which receives' a bolt 0 having a nut or nuts 0 by p which the sections are drawn together and are held detachably in position for use. Each mold-section C is further'provided with a handle C for convenience in handling it, as shown in Fig. 6, said handle beingomitted from the other figures of the drawings in order to avoid confusion.

It-will be understood that in practice the mold-sections B are arranged one within the otherand are of such relative diameters as to leave between their inner and outer surfaces, res ectively, a space in which is formed the wal of the stack or other structure being erected of air-space sections 6 are located out of contact with each other and with the walls of form air-spaces veri osite sides of its inner surand that within this space the series said outer and inner mold-sections. The plastic material X s lnserted 1n the space between the mner and outer mold-sections A and B and around the several air-space sec- 'said stack, whereby there will be a continuous circulation of air through said spaces, which will serve to keep-the wall ofthe stack cool.

Having thus described the invention, what I believe to be new, and desire to secure by Letters Patent, is v s 1. In a mold of the kind described, a moldsection composed of a plurality of body-see- I tions, a plurality of stren thening-ribs extending around said mol -section and secured thereto and each formed of hingedlyconnected sections, lugs carried by said sections, holding rods extending around the mold-sections and and means for tightening said. rods.

2. In a mold of the kind described, an airspace section comprising a pair of hollow sections adjustable with relation to each other and having their abutting edges inclined lon gitudinally of said sections, means for securing said sections detachably together and a stop-lug carried by one of said -members adapted to abut against the other of said members to limit the movement of said members with relation to each other in one direction.

3. In a mold of the kind described, a mold section composed of a plurality of body-sectio'ns, a plurality of strengthemngnbs extending around said mold-section and secured thereto and each formed ofhingedlyconnected sections, and holding-rods extending around the mold-s'ection.

4. A mold-section comprising a-plurality of body-sections, a plurality of strengtheningribs extending around and secured to it, each of said strengthening-ribs being formed of a plurality of hingedly-connected sections and provided with projections and holding-rods extending around the mold-sections and detachably secured to said 1OjeOt10I1S.

In testimony whereof aflix my signature in presence of two witnesses.

JAMES B. COLE.-

Witnesses:

' A. RUHLANDER,

A. H. KELLoee.

passing through said lugs, I 

